package com.xiaohua.xiaohuamall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.mysql.cj.util.StringUtils;
import com.xiaohua.common.constant.ProductConstant;
import com.xiaohua.xiaohuamall.product.dao.AttrAttrgroupRelationDao;
import com.xiaohua.xiaohuamall.product.dao.AttrGroupDao;
import com.xiaohua.xiaohuamall.product.dao.CategoryDao;
import com.xiaohua.xiaohuamall.product.entity.AttrAttrgroupRelationEntity;
import com.xiaohua.xiaohuamall.product.entity.AttrGroupEntity;
import com.xiaohua.xiaohuamall.product.entity.CategoryEntity;
import com.xiaohua.xiaohuamall.product.service.CategoryService;
import com.xiaohua.xiaohuamall.product.vo.AttrGroupRelationVo;
import com.xiaohua.xiaohuamall.product.vo.AttrRespVo;
import com.xiaohua.xiaohuamall.product.vo.AttrVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xiaohua.common.utils.PageUtils;
import com.xiaohua.common.utils.Query;

import com.xiaohua.xiaohuamall.product.dao.AttrDao;
import com.xiaohua.xiaohuamall.product.entity.AttrEntity;
import com.xiaohua.xiaohuamall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao attrAttrgroupRelationDao;
    @Autowired
    AttrGroupDao attrGroupDao;
    @Autowired
    CategoryDao categoryDao;
    @Autowired
    CategoryService categoryService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);//拷贝属性
        //1、保存基本数据
        this.save(attrEntity);
        //2、保存关联关系
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationDao.insert(relationEntity);
        }
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0){
            queryWrapper.eq("catelog_id",catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isNullOrEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> attrRespVos = records.stream().map((attrEntity)->{
           AttrRespVo attrRespVo = new AttrRespVo();
           BeanUtils.copyProperties(attrEntity,attrRespVo);
           //设置分类和分组的数据
            if ("base".equalsIgnoreCase(type)){
                AttrAttrgroupRelationEntity attrId = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId() != null){
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    if(attrGroupEntity != null){
                        attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                    }
                }
            }
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null){
                attrRespVo.setCateLogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());
        pageUtils.setList(attrRespVos);
        return  pageUtils;
    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity,respVo);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            AttrAttrgroupRelationEntity relationEntity = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attrId));
            //设置分组信息
            if (relationEntity != null){
                respVo.setAttrGroupId(relationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                if (attrGroupEntity != null){
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }
        //设置分类信息
        Long[] catelogPath = categoryService.findCatelogPath(attrEntity.getCatelogId());
        respVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
        if (categoryEntity != null){
            respVo.setCateLogName(categoryEntity.getName());
        }
        return respVo;
    }
    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            //修改分组关联
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());
            Integer count = attrAttrgroupRelationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId()));
            if (count > 0){
                attrAttrgroupRelationDao.update(
                        relationEntity,
                        new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId())
                );
            }else {
                attrAttrgroupRelationDao.insert(relationEntity);
            }
        }

    }

    /**
     * 根据分组id查找关联的所有属性
     * @return
     * @param attrgroupId
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> attrAttrgroupRelationEntities = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id",attrgroupId));
        List<Long> attrids = attrAttrgroupRelationEntities.stream().map((attr)->{
           return attr.getAttrId();
        }).collect(Collectors.toList());
        if(attrids.size() > 0 && attrids != null){
            Collection<AttrEntity> attrEntities = this.listByIds(attrids);
            return (List<AttrEntity>) attrEntities;
        }else{
            return  null;
        }

    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
//        attrAttrgroupRelationDao.delete(new QueryWrapper<>().eq("attr_id",1L).eq("attr_group_id",1L));
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item)->{
          AttrAttrgroupRelationEntity relationEntity =  new AttrAttrgroupRelationEntity();
          BeanUtils.copyProperties(item,relationEntity);
          return relationEntity;
        }).collect(Collectors.toList());
        attrAttrgroupRelationDao.deleteBathRelation(entities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils noattrRelation(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        //2、当前分组只能关联别的分组没有引用的属性
        //1)、当前分类下的其他分组
        Long cateLogId = attrGroupEntity.getCatelogId();
        List<AttrGroupEntity> groupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id",cateLogId));
        List<Long> collect = groupEntities.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        //2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id",collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        //3)、从当前分类的所有属性中移除这些属性
       QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("catelog_id",cateLogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
       if (attrIds != null && attrIds.size() > 0){
           queryWrapper.notIn("attr_id",attrIds);
       }
       if (!StringUtils.isNullOrEmpty((String) params.get("key"))){
           queryWrapper.and((w)->{
               w.eq("attr_id",(String) params.get("key")).or().like("attr_name",(String) params.get("key"));
           });
       }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params),queryWrapper);
        return new PageUtils(page);
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        /**
         * SELECT attr_id FROM pms_attr WHERE attr_id IN(?) AND search_type = 1
         */
        return baseMapper.selectSearchAttrIds(attrIds);
    }

}